package cn.bdqn.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author 小涛
 * @date: 2020/7/2 16:09
 */
public class LoginHandlerInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        //登录成功之后，应该有用户的session
        Object loginUser = request.getSession().getAttribute("id");

        if (loginUser==null){
            request.setAttribute("msg","没有权限，请先登录");
            request.getRequestDispatcher("/login.html").forward(request,response);
            return false;
        }else {
            return true;
        }
    }

}
